CN107078417B

CN107078417B - terminal box

Info

Publication number: CN107078417B
Application number: CN201580062695.9A
Authority: CN
Inventors: 雅斯切斯洛·扬岑
Original assignee: Phoenix Electric Co Ltd
Current assignee: Phoenix Electric Co Ltd
Priority date: 2014-11-18
Filing date: 2015-10-12
Publication date: 2019-12-13
Anticipated expiration: 2035-10-12
Also published as: DE102014116811A1; EP3221928A1; JP2017534165A; JP6457651B2; EP3221928B1; WO2016078832A1; CN107078417A

Abstract

The invention relates to a terminal box (100) having an insulating housing (10) having a first connection layer (11a, 11b, 11c, 11d) and at least one second connection layer (11a, 11b, 11c, 11d), wherein in each connection layer (11a, 11b, 11c, 11d) a busbar (12a, 12b, 12c, 12d) and two conductor connection units (13a ', 13 a', 13b ', 13 c', 13d ') arranged opposite one another and connected in electrical contact with the busbar (12a, 12b, 12c, 12d) are provided, wherein in the insulating housing (10) at least one test plug opening (22) for receiving a test plug (200) is formed, wherein the test plug opening (22) is provided in the first connection layer (11a, 11b, 11c, 11d, d') and, 11d) And between the wire connection units (13a ', 13a ", 13 b', 13 b", 13c ', 13c ", 13 d', 13 d") of the second connection layer (11a, 11b, 11c, 11d) and the adjacently arranged wire connection units (13a ', 13a ", 13 b', 13 b", 13c ', 13c ", 13 d', 13 d").

Description

Terminal box

Technical Field

the invention relates to a terminal box, in particular a jumper terminal box, having an insulating housing with a first connection layer and at least one second connection layer, wherein in each connection layer a busbar and two oppositely arranged conductor connection units are provided, which are connected in electrical contact with the busbar, wherein at least one test plug opening for receiving a test plug is formed in the insulating housing.

Background

As described, for example, in DE 29502347U, junction boxes have various known designs. Junction boxes are used in particular for distributing one or more electrical potentials. The junction box as a jumper junction box usually has two or more than two connection layers placed one above the other, in which bus bars are respectively arranged, wherein the ends of the bus bars are respectively connected to conductor connection units for connecting electrical conductors. The terminal box is usually clipped onto a support rail, which can be arranged in the switchgear cabinet in most cases in a plurality. The wire connection unit can be formed in the form of a screw terminal, a tension spring terminal or an insulation displacement terminal (schneidschlussklemmen).

the junction box should in operation transmit electrical current between the individual elements of the junction box. In order to detect a defined functional effect of the current transmission and, if appropriate, to detect incorrect connections, terminal blocks are known which form a test plug opening in the insulating material housing for inserting a corresponding test plug. The test plug opening enables, on the one hand, electrically conductive elements, such as wire connection units and/or bus bars, to be brought into contact with the test plug within the insulating housing. On the other hand, the function of the test plug opening is to guide and securely fix the test plug in the terminal block, so that damage to the electronic components of the terminal block is prevented.

As electronic equipment and electronic devices become more miniaturized, the switchgear is also expected to become more miniaturized. Furthermore, more and more electronic devices and electronic devices must be connected to one another, so that the space available for the electronic junction box in the switchgear cabinet is additionally reduced. Therefore, there is a constant demand for terminal blocks having a very compact structure, i.e. a very small width and length.

Disclosure of Invention

It is therefore an object of the present invention to provide a terminal block which enables a test measurement to be carried out by means of a test plug even when the overall dimensions are reduced.

The object according to the invention can be achieved by the features of claim 1, suitable designs and advantageous embodiments of the invention being specified in the dependent claims.

According to the invention, the above-mentioned object is achieved in a terminal block of the type described in detail initially in that a test plug opening is provided between the conductor connecting units of the first connection layer and the adjacently arranged conductor connecting units of the second connection layer.

Thus, the detection plug opening extends across the two connection layers, such that a first portion of the detection plug opening is arranged in the region of the first connection layer and a second portion of the detection plug opening is arranged in the region of the second connection layer. The detection plug opening thus extends across two potentials separated from each other. In this case, it is preferably provided that the two parts of the test plug openings are formed to the same size, so that the test plug openings are distributed uniformly over the two connection layers. The distribution of the test plug openings over the two connection layers can significantly reduce the required installation space for the test plug openings, so that the overall size of the entire terminal block can be significantly reduced without the need to reduce the size of the test plug openings themselves, so that test plugs having conventional dimensions can be used even in the reduced installation size.

Preferably, the line connection units each have a first line connection region for connecting a first line and a second line connection region for connecting a second line, wherein the test plug opening is preferably arranged between the first line connection region and the second line connection region. The space requirement necessary for the test plug opening can be further reduced by arranging the test plug opening between the two conductor connection regions, so that the overall size of the terminal box does not need to be enlarged in the case of two conductor connection regions per conductor connection unit, in comparison with a terminal box without a test plug opening.

The conductor connection units preferably each have a current bar and at least one leg spring which clamps the conductor inserted in the conductor connection unit against the current bar, wherein the current bar and/or the at least one leg spring of the conductor connection unit preferably project into the test plug opening. The wire connection unit is then preferably formed in the form of a spring force clamping joint. The current bars of the wire connection unit are electrically connected to the bus bars of the connection layer, so that the contact of the wire connection unit to the bus bars can be established via the current bars. If the line connection unit has two line connection regions, two leg springs are provided in each line connection unit, each leg spring being able to clamp a line in relation to a respective current bar of the line connection unit. The test plug inserted into the test plug opening is preferably in contact with the current bar and/or with one or two helical torsion springs of the wire connection unit. In order to make this possible, the current bar and/or one or two helical torsion springs project into the test plug opening. For this purpose, the current bar is preferably formed so as to be bent in the direction of the opening of the test plug. If the current bar and/or one or two helical torsion springs protrude into the test plug opening, the wire connection unit can form at least one contact point, preferably more than one contact point, i.e. two or three contact points, with the test plug inserted into the test plug opening. This ensures that the detector inserted into the detection plug opening detects a good connection of the plug.

In order to facilitate the introduction of the test plug into the test plug opening, it is further preferably provided that the test plug opening has a chamfered introduction region for introducing the test plug into the test plug opening.

It is particularly further preferably provided that the test plug opening has a diamond shape. The diamond shape allows the test plug opening to be well defined, thereby allowing the test plug opening to be well distinguished from other openings at the junction box. This can significantly reduce erroneous insertion of the detection plug, and can improve the user's operation. The diamond-shaped test plug opening accommodates the cross-section of the necessary space of a conventional test plug while reducing the necessary space of the test plug opening in the insulating material housing.

The selectively detectable plug opening can also have a circular, elliptical or polygonal shape.

Drawings

The invention will be elucidated in more detail below with reference to the drawings according to a preferred embodiment.

wherein:

Figure 1 shows a schematic perspective view of a junction box according to the invention,

Figure 2 shows a perspective view of a detail fragment of the junction box shown in figure 1,

Figure 3 shows a schematic top view of a detail section of figure 2 of the junction box of figure 1,

Figure 4 shows a schematic cross-sectional view of two wire connection units adjacent to each other of the junction box of figure 1 along two different connection levels,

Fig. 5 shows a sectional view of fig. 4 with a test plug introduced into the test plug opening.

Detailed Description

Fig. 1 shows a junction box 100 formed as a jumper junction box. The terminal block 100 has an insulating material housing 10, wherein a plurality of connecting layers 11a, 11b, 11c, 11d, here four connecting layers 11a, 11b, 11c, 11d, which are arranged one above the other, are formed in the insulating material housing 10. In each connection layer 11a, 11b, 11c, 11d, a bus bar 12a, 12b, 12c, 12d and two conductor connection units 13a ', 13a ", 13 b', 13 b", 13c ', 13c ", 13 d', 13 d" are arranged opposite one another and connected in electrical contact with the bus bars 12a, 12b, 12c, 12 d. The wire connection units 13a ', 13a ", 13 b', 13 b", 13c ', 13c ", 13 d', 13 d" can be respectively embedded in the accommodation chambers formed at the end faces of the insulating material housing 10.

As is shown in particular in fig. 3 and 4, in the design shown here each wire connection unit 13a ', 13a ", 13 b', 13 b", 13c ', 13c ", 13 d', 13 d" has a current bar 14, two adjacently disposed helical torsion springs 15, 16, two actuating elements 17, 18 for actuating the helical torsion springs, and two wire insertion openings 19, 20. Each wire connection unit 13a ', 13a ", 13 b', 13 b", 13c ', 13c ", 13 d', 13 d" can thus be connected to two wires, which are not shown here. Each current bar 14 has a fork joint 21, by means of which the current bar 14 can be brought into contact with the bus bars 12a, 12b, 12c, 12d, respectively.

The line connection units 13a ', 13a ", 13 b', 13 b", 13c ', 13c ", 13 d', 13 d" each have two line connection regions 13aa ', 13 ab', 13aa ", 13 ab", 13ba ', 13 bb', 13ba ", 13 bb", 13ca ', 13 cb', 13ca ", 13 cb", 13da ', 13 db', 13da ", 13 db", respectively. Each wire connection region 13aa ', 13 ab', 13aa ", 13 ab", 13ba ', 13 bb', 13ba ", 13 bb", 13ca ', 13 cb', 13ca ", 13 cb", 13da ', 13 db', 13da ", 13 db" has a helical torsion spring 15, 16, an actuating element 17, 18 and a wire introduction opening 19, 20, wherein the current bar 14 of the wire connection unit 13a ', 13a ", 13 b', 13 b", 13c ', 13c ", 13 d', 13 d" extends across both wire connection regions 13aa ', 13 ab', aa 13 ", 13 ab", 13ba ', 13 bb', 13ba ", 13 bb", 13ca ', 13 cb', 13ca ", 13 cb", 13da ', 13 db', 13da ", 13 db".

A plurality of test plug openings 22 for introducing test plugs 200 are further formed in the insulating material housing 10. Each test plug opening 22 extends across two adjacently arranged connection layers 11a, 11b, 11c, 11d and is formed between two conductor connection units 13a ', 13a ", 13 b', 13 b", 13c ', 13c ", 13 d', 13 d" of the adjacently arranged connection layers 11a, 11b, 11c, 11 d.

As shown in particular in fig. 3, a first part 23a of the test plug opening 22 extends over the area of the first connection layer 11a, 11b, 11c, 11d and a second part 23b of the test plug opening 22 extends over the area of the adjacent, second connection layer 11a, 11b, 11c, 11 d. So that the detection plug opening 22 extends across two potentials separated from each other. The two parts 23a, 23b of the test plug opening 22 are essentially of the same size in the illustrated design, so that the test plug opening 22 is distributed uniformly over the two mutually adjacent connection layers 11a, 11b, 11c, 11 d.

further, the detection plug openings 22 are formed between the two wire connection regions 13aa ', 13 ab', 13aa ", 13 ab", 13ba ', 13 bb', 13ba ", 13 bb", 13ca ', 13 cb', 13ca ", 13 cb", 13da ', 13 db', 13da ", 13 db" of the wire connection units 13a ', 13a ", 13 b', 13 b", 13c ', 13c ", 13 d', 13 d", respectively.

As is shown in particular in fig. 4 and 5, the two leg springs 15, 16 and the section 14a of the current bar 14 project into the test plug opening 22, so that a test plug 200 introduced into the test plug opening 22 can be brought into contact with one or both leg springs 15, 16 and/or with the current bar 14 via the section 14a, so that the wire connection units 13a ', 13a ", 13 b', 13 b", 13c ', 13c ", 13 d', 13 d" can form up to three contact points with the test plug 200 inserted into the test plug opening 22. One or both helical torsion springs 15, 16 of the line connection units 13a ', 13a ", 13 b', 13 b", 13c ', 13c ", 13 d', 13 d" arranged on the first connection layer 11a, 11b, 11c, 11d underneath two connection layers 11a, 11b, 11c, 11d lying next to one another contact and/or the current bar 14 projects into the test plug opening 22.

As also shown in fig. 2 and 3, in order to facilitate the introduction of the test plug 200 into the test plug openings 22, the test plug openings 22 each have an introduction region 24 which forms an upper edge of the test plug opening 22, wherein the introduction regions 24 are formed in a chamfered shape.

Furthermore, the test plug openings 22 each have a diamond shape, wherein the two parts 23a, 23b of the test plug openings 22 are each formed in a triangular shape.

Description of the reference numerals

Terminal box 100

Insulating material housing 10

connection layers 11a, 11b, 11c, 11d

Bus bars 12a, 12b, 12c, 12d

Wire connection units 13a ', 13 a', 13b

13b”、13c’、13c”、

13d’、13d”

Wire connection regions 13 aa', 13ab

13aa”、13ab”、

13ba’、13bb’、

13ba”、13bb”、

13ca’、13cb’、

13ca”、13cb”、

13da’、13db’、

13da”、13db”

Current bar 14

Section 14a of the current bar

Helical torsion springs 15, 16

Actuating elements 17, 18

Lead wire lead-in openings 19, 20

Fork joint 21

Test plug opening 22

First part 23a of the test plug opening

Second part 23b of the test plug opening

Lead-in area 24

Test plug 200

Claims

1. Terminal box (100) having an insulating material housing (10) with a first connecting layer (11a, 11b, 11c, 11d) and at least one second connecting layer (11a, 11b, 11c, 11d), wherein in each connecting layer (11a, 11b, 11c, 11d) a busbar (12a, 12b, 12c, 12d) and two conductor connecting units (13a ', 13a ', 13b ', 13c ', 13d ') arranged opposite one another and connected in electrical contact with the busbar (12a, 12b, 12c, 12d) are provided, wherein in the insulating material housing (10) at least one test plug opening (22) for receiving a test plug (200) is formed,

Characterized in that the detection plug opening (22) is provided between the wire connection units (13a ', 13 a', 13b ', 13 c', 13d ') of the first connection layer (11a, 11b, 11c, 11d) and the wire connection units (13 a', 13a ', 13 b', 13c ', 13 d') of the second connection layer (11a, 11b, 11c, 11d) which are provided adjacent to the first connection layer wire connection units, the detection plug opening (22) extending across both connection layers (11a, 11b, 11c, 11d) such that a first portion (23a) of the detection plug opening (22) is provided in the region of the first connection layer (11a, 11b, 11c, 11d) and a second portion (23b) of the detection plug opening (22) is provided in the region of the second connection layer (11a, 11b, 11c, 11d), 11b, 11c, 11 d).

2. The terminal box (100) according to claim 1, wherein the wire connection units (13a ', 13a ", 13b ', 13 b", 13c ', 13c ", 13d ', 13 d") respectively have first wire connection regions (13aa ', 13ab ', 13aa ", 13 ab", 13ba ', 13bb ", 13ca ', 13 cb", 13da ', 13db ', 13da ", 13 db") for connecting first wires and second wire connection regions (13 ', 13aa ", 13 ab", 13ba ', 13bb ', 13ba ", 13 bb", 13ca ', 13cb ", 13 db", 13da ', 13da ", 13 db"), for connecting second wires, wherein the test plug openings (22) are provided at the first wire connection regions (13aa ', 13aa ″, 13b ', 13da ", 13db ″) 13ab ', 13aa ", 13 ab", 13ba ', 13bb ', 13ba ", 13 bb", 13ca ', 13cb ', 13ca ", 13 cb", 13da ', 13db ', 13da ", 13 db") and a second wire connection region (13aa ', 13ab ', 13aa ", 13 ab", 13ba ', 13bb ', 13ba ", 13 bb", 13ca ', 13cb ', 13ca ", 13 cb", 13da ', 13db ', 13da ", 13 db").

3. Terminal box (100) according to claim 1 or 2, characterized in that the line connection units (13a ', 13a ", 13 b', 13 b", 13c ', 13c ", 13 d', 13 d") each have a current bar (14) and at least one helical torsion spring (15, 16) for clamping a line inserted in the line connection unit (13a ', 13a ", 13 b', 13 b", 13c ', 13c ", 13 d', 13 d") relative to the current bar (14), wherein the current bar (14) and/or the at least one helical torsion spring (15, 16) of the line connection unit (13a ', 13a ", 13 b', 13 b", 13c ', 13c ", 13 d', 13 d") project into the test plug opening (22).

4. Junction box (100) according to claim 1, characterized in that the test plug opening (22) has a chamfered guide area (24) guiding a test plug (200) into the test plug opening.

5. Junction box (100) according to claim 1, characterized in that the detection plug opening (22) has a diamond shape.